Base64 encoding of NSImage
I am looking at available option to send an NSImage to a webserver. I came across gSoap however its licensing model makes it not suitable. Using REST / JSON seems like an easy option however NSDATA does not seem to be supported by the JSON Serialiser. The one remaining option I considered was to encode the image myself to base64 before including in the JSON request. This could work quite nicely, however there doesn't seem to be a standard method for base64 encoding. Any suggestion on how to best achieve this. Kind regards Alex ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Base64 encoding of NSImage
I think the answers given here will help you out: http://stackoverflow.com/questions/392464/any-base64-library-on-iphone-sdk [[[Brainchild alloc] initWithName:@Richard Altenburg] saysBestRegards]; Op 1 jul. 2012, om 17:23 heeft Alexander Hartner het volgende geschreven: I am looking at available option to send an NSImage to a webserver. I came across gSoap however its licensing model makes it not suitable. Using REST / JSON seems like an easy option however NSDATA does not seem to be supported by the JSON Serialiser. The one remaining option I considered was to encode the image myself to base64 before including in the JSON request. This could work quite nicely, however there doesn't seem to be a standard method for base64 encoding. Any suggestion on how to best achieve this. Kind regards Alex ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/cocoa-dev%40brainchild.nl This email sent to cocoa-...@brainchild.nl ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Base64 encoding of NSImage
I think that only cocoa collections can be supported by the JSON serializer. Even CLLocations aren't supported since they consist of structs. On Jul 1, 2012, at 11:23 AM, Alexander Hartner wrote: I am looking at available option to send an NSImage to a webserver. I came across gSoap however its licensing model makes it not suitable. Using REST / JSON seems like an easy option however NSDATA does not seem to be supported by the JSON Serialiser. The one remaining option I considered was to encode the image myself to base64 before including in the JSON request. This could work quite nicely, however there doesn't seem to be a standard method for base64 encoding. Any suggestion on how to best achieve this. Kind regards Alex ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/zav%40mac.com This email sent to z...@mac.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Base64 encoding of NSImage
Try here. it is a category for nsdata in this post. http://www.thohensee.com/?page_id=435 Tom Sent from my iPhone On Jul 1, 2012, at 10:26 AM, Alexander Hartner a...@j2anywhere.com wrote: I am looking at available option to send an NSImage to a webserver. I came across gSoap however its licensing model makes it not suitable. Using REST / JSON seems like an easy option however NSDATA does not seem to be supported by the JSON Serialiser. The one remaining option I considered was to encode the image myself to base64 before including in the JSON request. This could work quite nicely, however there doesn't seem to be a standard method for base64 encoding. Any suggestion on how to best achieve this. Kind regards Alex ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/tom.hohensee%40gmail.com This email sent to tom.hohen...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Base64 encoding of NSImage
If you want to be sure which one works for you, it is probably best to read how Base64 encoding actually works, maybe you find out you can just as easily roll your own solution. Especially on a fast Mac desktop, it would not have to be the worlds' most efficient solution, it will be fast anyways, and always faster than the web server you are uploading to. This might help: http://email.about.com/cs/standards/a/base64_encoding.htm [[[Brainchild alloc] initWithName:@Richard Altenburg] saysBestRegards]; Op 1 jul. 2012, om 17:46 heeft Alexander Hartner het volgende geschreven: There seem to be a number of options listed on the suggested solution. Hard to see which one is best. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Base64 encoding of NSImage
On Sun, Jul 1, 2012, at 11:23 PM, Alexander Hartner wrote: I am looking at available option to send an NSImage to a webserver. I came across gSoap however its licensing model makes it not suitable. Using REST / JSON seems like an easy option however NSDATA does not seem to be supported by the JSON Serialiser. The one remaining option I considered was to encode the image myself to base64 before including in the JSON request. This could work quite nicely, however there doesn't seem to be a standard method for base64 encoding. Any suggestion on how to best achieve this. If you're in control over both the client and server, I'd suggest avoiding sending the image data over JSON. You're going to seriously inflate the file size by base64-encoding it, and for what purpose? You can be REST without using JSON. It would be much more efficient if you could just issue a PUT at a certain URL to upload the image data. --Kyle Sluder ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Base64 encoding of NSImage
On Sun, Jul 1, 2012 at 1:05 PM, Kyle Sluder k...@ksluder.com wrote: On Sun, Jul 1, 2012, at 11:23 PM, Alexander Hartner wrote: I am looking at available option to send an NSImage to a webserver. If you're in control over both the client and server, I'd suggest avoiding sending the image data over JSON. You're going to seriously inflate the file size by base64-encoding it, and for what purpose? You can be REST without using JSON. It would be much more efficient if you could just issue a PUT at a certain URL to upload the image data. I completely agree - don't encode it unless you're sure you really need that, such as if your webserver were a VAX and didn't understand 8 bit character encodings. You're going to balloon the resident memory size of the app, possibly dramatically if you're talking arbitrary images. --Jim ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Base64 encoding of NSImage
On Jul 1, 2012, at 8:23 AM, Alexander Hartner wrote: I am looking at available option to send an NSImage to a web server. The simplest way would jut be to PUT the raw JPEG/PNG/whatever data to a URL on the server. No need to encode it. I came across gSoap however its licensing model makes it not suitable. Plus, using SOAP for this would be like using an elaborate rickety Rube Goldberg device to swat a fly ;-) Using REST / JSON seems like an easy option however NSDATA does not seem to be supported by the JSON Serialiser. Yes, JSON doesn't support binary data, and the serializer doesn't do any magic type transformations for you. It's not a good idea to transmit base64-encoded data anyway, if you can possibly avoid it, as it'll make it ⅓ larger. —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Base64 encoding of NSImage
On Jul 1, 2012, at 9:33 AM, Richard Altenburg (Brainchild) wrote: If you want to be sure which one works for you, it is probably best to read how Base64 encoding actually works, maybe you find out you can just as easily roll your own solution. Especially on a fast Mac desktop, it would not have to be the worlds' most efficient solution, it will be fast anyways, and always faster than the web server you are uploading to. Bad idea. You've now added some brand new bit-twiddling code to your app, and now you have to test it. Does it handle all lengths of data (there are 3 different cases, IIRC)? Does it work in big-endian and little-endian? Does it work in 64-bit? Does it work if the data is empty or less than 3 bytes long? If you've written a decoder, does it handle embedded line-breaks? Does it fail gracefully if the input is incorrect? Does it parse all lengths of input? You get the idea. It's always better to use an already-tested library than to roll your own, if it's feasible. This is especially true of code that might be parsing untrusted input data (such as a base64 decoder) since bugs in that code can often be exploited as attacks. [I'm aware that the OP doesn't need a decoder for this purpose; but I'm talking about the more general issues.] —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
How to copy class interface and implementation without connections to .xib file
(You may reply in Caps Lock if this question is too noobish for this list) I wrote an experimental project for Mac OS X. It uses a custom NSView and some user interface controls connected to the view's class in Interface Builder. I want to do about the same project for iOS, so I started a new project in Xcode 4.3.3 and created a new class which will be a custom UIView. I copied most of the code from the Mac OS X version into the interface and implementation of the new class in the new project. Unfortunately the connections with the .xib from the other project are still there, which is obviously not what I want. I just want to connect the IBOutlets and IBActions to the .xib in my new iOS project. What did I do wrong? And how did all those books I read not make me smart enough to figure this out on my own? I must be getting old... [[[Brainchild alloc] initWithName:@Richard Altenburg] saysBestRegards]; ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Base64 encoding of NSImage
This is what I use. Short and sweet.
@implementation NSData (Base64)
- (NSData *)dataWithBase64Encoding
{
CFDataRef retval = NULL;
SecTransformRef encodeTrans =
SecEncodeTransformCreate(kSecBase64Encoding, NULL);
if (encodeTrans != NULL) {
if (SecTransformSetAttribute(encodeTrans,
kSecTransformInputAttributeName, (__bridge CFDataRef)self, NULL))
retval = SecTransformExecute(encodeTrans, NULL);
CFRelease(encodeTrans);
}
return CFBridgingRelease(retval);
}
- (NSData *)dataFromBase64Decoding
{
CFDataRef retval = NULL;
SecTransformRef decodeTrans =
SecDecodeTransformCreate(kSecBase64Encoding, NULL);
if (decodeTrans != NULL) {
if (SecTransformSetAttribute(decodeTrans,
kSecTransformInputAttributeName, (__bridge CFDataRef)self, NULL))
retval = SecTransformExecute(decodeTrans, NULL);
CFRelease(decodeTrans);
}
return CFBridgingRelease(retval);
}
@end
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Re: How to copy class interface and implementation without connections to .xib file
On Jul 1, 2012, at 1:39 PM, Richard Altenburg (Brainchild) wrote: Unfortunately the connections with the .xib from the other project are still there, which is obviously not what I want. I’m not sure I understand what you mean by this. Did you copy over the .xib from the other project? If so, of course it will contain all the connections from the old .xib, since it’s the same .xib. Just set up a new .xib file, or modify the old one to remove everything that doesn’t need to be there. Charles ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Base64 encoding of NSImage
On Jul 1, 2012, at 12:16 PM, David Riggle wrote: This is what I use. Short and sweet. 10.7-only, though. (And not available on iOS.) —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to copy class interface and implementation without connections to .xib file
Thanks for your thoughts, Charles. No, I did not copy the .xib to a new project. I created a new project for iOS wit one view, and created a new class in it that is to be a subclass of UIView which will contain my drawing code in drawRect. I copied code from the old project over into the new project, into the .h and .m files of the new class. It immediately showed that the outlets and actions were connected, and on inspection they were connected to the .xib in the old project. I connected them to my new .xib in my new project, but how on earth are old ones copied over to a new project is beyond me at this moment. [[[Brainchild alloc] initWithName:@Richard Altenburg] saysBestRegards]; Op 1 jul. 2012, om 21:21 heeft Charles Srstka het volgende geschreven: ’m not sure I understand what you mean by this. Did you copy over the .xib from the other project? If so, of course it will contain all the connections from the old .xib, since it’s the same .xib. Just set up a new .xib file, or modify the old one to remove everything that doesn’t need to be there. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to copy class interface and implementation without connections to .xib file
On Jul 1, 2012, at 1:54 PM, Richard Altenburg (Brainchild) wrote: It immediately showed that the outlets and actions were connected, and on inspection they were connected to the .xib in the old project. Um, what _exactly_ did it show? There's no way for files in different projects to have relations to each other like that. —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to copy class interface and implementation without connections to .xib file
On Jul 1, 2012, at 4:54 PM, Richard Altenburg (Brainchild) wrote: Thanks for your thoughts, Charles. No, I did not copy the .xib to a new project. I created a new project for iOS wit one view, and created a new class in it that is to be a subclass of UIView which will contain my drawing code in drawRect. I copied code from the old project over into the new project, into the .h and .m files of the new class. It immediately showed that the outlets and actions were connected, and on inspection they were connected to the .xib in the old project. I connected them to my new .xib in my new project, but how on earth are old ones copied over to a new project is beyond me at this moment. At least once I've started a new project and within the new window a file was open that belonged to a previously opened project. I wonder if this is what happened to you, and the xib file you were looking at was not the xib file in your new project. If you Command-click the file icon in the window's title bar, you can see the full path of the file you are looking at. If the path goes to the old project, close it with File Close YourFileName.xib. The keyboard equivalent is Control-Command-W. You might even want to close *all* files that are open in that window by holding down that key until the window says No Editor. Closing the project window and reopening might help -- I didn't think to try that. Then click on the xib as listed on the left, in the file navigator pane. *That* xib, the correct one, shouldn't have any mysterious connections. The only connected outlets should be any that are automatically created when you create certain kinds of nib, e.g., from a window controller to a window. --Andy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
opening file without an extension
I have an NSDocument subclass, and I want to open a data file that has no file extension. (It is BSM audit data, and there is no standard extension). The application is sandboxed. When the open panel pops up, all the regular files are greyed out. Is there a way to let Powerbox (??) let the user select any file? Thanks, Todd ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: opening file without an extension
On Jul 1, 2012, at 8:19 PM, Charles Srstka wrote: Does putting an asterisk (*) in the Extensions field for your document type not work in the sandbox? Excellent! Yes it did. Thanks. Todd ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
